SOLUTION: Please help me prove the following identities: a) cot^2σsin^2σ + sin^2σ=1 b) cosσsecσ/1+tan^2σ=cos^2σ c) sin2x/1+cos2x=tanx d) csc2A = c

Algebra ->  Trigonometry-basics -> SOLUTION: Please help me prove the following identities: a) cot^2σsin^2σ + sin^2σ=1 b) cosσsecσ/1+tan^2σ=cos^2σ c) sin2x/1+cos2x=tanx d) csc2A = c      Log On


   



Question 749613: Please help me prove the following identities:
a) cot^2σsin^2σ + sin^2σ=1
b) cosσsecσ/1+tan^2σ=cos^2σ
c) sin2x/1+cos2x=tanx
d) csc2A = cot2A= cotA
Thank you,
-Nie

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Please help me prove the following identities:
a) cot^2σsin^2σ + sin^2σ=1

..
b) cosσsecσ/1+tan^2σ=cos^2σ

..
c) sin2x/1+cos2x=tanx

d) csc2A = cot2A= cotA
??